Arp104 in Ursa Major : LRGB (Daniel.P)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 5205 · NGC 5216 · NGC 5218

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Arp104 in Ursa Major : LRGB

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

Powered byPixInsight

Arp104 in Ursa Major : LRGB

Acquisition type: Electronically-Assisted Astronomy (EAA, e.g. based on a live video feed)

This is the last target I have acquired from my home near Paris, during the coronavirus containment period.

We used this period, with my friend Fabian, to learn how to remote control our telescop in preparation to move it to a remote observatory.

In april and may, 150 hours of data were acquired with the following sequence :

- remote start up of the computer (relay box 1)

- remote power up of the mount (relay box 1)

- remote start up of the relay box 2 (relay box 1)

- remote power up of CCD, focuser, AO, dew heater ... (relay box 2)

- start sequence in SGP using AnyDesk remote computer control software

- possibility to check mount goto and meridian flip with webcam

- at the end of the sequence after SGP wam up ccd and park telescop, relay boxes shut down power to equipment

We now believe that our system is robust enough to be operated at distance.

For this target, sensor temperatures were -12°C and -15°C.

Processing in PI

- Dark & Flat calibration of L, R, G, B channels

- Cosmetic Correction

- Registration

- Integration

- Crop each channel

- DBE each channel to prepare sup lum integration.

- Create Super Lum channel by integrating L, R, G, B channels with exposure weighting

- Mure denoise super Lum

- RGB creation

- Delinearisation using HT of SupLum and MS of RGB

- TGV denoise RGB

- Combine SupLum with a & b color channels of RGB

- Color saturation (and desaturate bkg)

- TGV denoise

- Color Boost stars

In Mac Photo : levels, deflip

ZWO ASI1600MM/QHY163M

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3638852
PixInsight job	7LYT8OGL7XDKCUZHAVUQ06XD7B2KIFLT
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	13h32m06s.800
RA (top/left)	13h37m24s.100
RA (top/right)	13h27m07s.585
RA (bottom/right)	13h26m58s.323
RA (bottom/left)	13h36m56s.463

Dec (center)	+62°41′44″.74
Dec (top/left)	+63°06′15″.22
Dec (top/right)	+63°09′05″.84
Dec (bottom/right)	+62°16′30″.100
Dec (bottom/left)	+62°13′46″.40

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Arp104 in Ursa Major : LRGB

Arp104 in Ursa Major : LRGB

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Arp104 in Ursa Major : LRGB

Arp104 in Ursa Major : LRGB

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